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Technical Data Sheet
PartsTable / COMPONENT / 1889568 ASSEMBLY C 1/2IN
1889568 ASSEMBLY C 1/2IN ✓ Verified by PartsTable
— · GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

The 1889568 ASSEMBLY C 1/2IN is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-310-7690, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
1889568 ASSEMBLY C 1/2IN
NSN: 4820-01-310-7690
FSC: 4820
CAGE: 80064 — NAVAL SHIP SYSTEMS COMMAND (USA)
SPECIFICATIONS
Part Number1889568 ASSEMBLY C 1/2IN
NSN4820-01-310-7690
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 1889568 ASSEMBLY C 1/2IN · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
STYLE DESIGNATOR: STRAIGHT THRU
•
FURNISHED ITEMS AND QUANTITY: 1 HANDWHEEL
•
MEDIA FOR WHICH DESIGNED: WATER-OIL-GAS SINGLE RESPONSE
•
MATERIAL: PLASTIC POLYTETRAFLUOROETHYLENE PACKING
•
OPERATING PRESSURE: 700.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
CONNECTION STYLE: SOCKET ALL ENDS
•
NOMINAL PIPE SIZE ACCOMMODATED: 0.500 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORSTRAIGHT THRU
FURNISHED ITEMS AND QUANTITY1 HANDWHEEL
MEDIA FOR WHICH DESIGNEDWATER-OIL-GAS SINGLE RESPONSE
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE PACKING
OPERATING PRESSURE700.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
MATERIALNICKEL ALLOY STEM
CONNECTION STYLESOCKET ALL ENDS
NOMINAL PIPE SIZE ACCOMMODATED0.500 INCHES ALL ENDS IN
MATERIALBRONZE BODY
FLOW CONTROL DEVICEDISK
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
2620-902X6 PIECE 23 1 1/2INInterchangeable
interchangeable cross-reference
interchangeable
70302690AND70302691Interchangeable
interchangeable cross-reference
interchangeable
845-1889568 PIECE 23 1 1/2INInterchangeable
interchangeable cross-reference
interchangeable
803-2177934Interchangeable
interchangeable cross-reference
interchangeable
SS845-1889568ASInterchangeable
interchangeable cross-reference
interchangeable
2620-902X6Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1889568 ASSEMBLY C 1/2IN?
1889568 ASSEMBLY C 1/2IN is a 1889568 ASSEMBLY C 1/2IN.
What parts can replace 1889568 ASSEMBLY C 1/2IN?
There are 17 known substitutes for 1889568 ASSEMBLY C 1/2IN: 2620-902X6 PIECE 23 1 1/2IN, 70302690AND70302691, 845-1889568 PIECE 23 1 1/2IN and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1889568 ASSEMBLY C 1/2IN?
1889568 ASSEMBLY C 1/2IN is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-310-7690. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026